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PBE Launcher Error.

As a start I DO realize that there are many threads about this. I'm just trying to bring it up to Riot's attention more. When I try to run the lol.launcher OR the lol.admin.launcher a logo pops up on my screen and flashes. The only way to get rid of it is to restart my computer. Many other people have been experiencing this problem. I have also sent a support ticket, and am just creating this thread to bring attention to the problem. And in-case that someone has a fix.

*FIX*I was told by Riot Dart (via support ticket I had sent) to delete the C:/Riot Games/PBE/RADS/Projects/LoL_Launcher. This worked for me! Hope this helps you guys. Basically, wherever you have extracted your PBE to you're going to want to go into it. Once in go to RADS. Once in RADS you are going to want to go into Projects. Now delete the folder LoL_Launcher. Good Luck!

Thanks for bringing this up, I'm having this problem, too. I downloaded the PBE yesterday, (i'm here the second day the second day of the small window of sign-ups) It won't update correctly, sometimes doesn't even open, and when it does, it just is at 33% complete and says the whole bull "step 2/2 calculating differences.." But won't do any thing, i'm glad there are other people have this problem, because I know Riot should fix it soon, and re-schedule the sign up days soon if they don't get it working soon...